classnotes - chapter 26

Science 8 classnotes

Chapter 26 - Oxidation and Reduction

Key Terms:

anode	cathode	combustion
corrosion	electrochemistry	electrode
electrolysis	half reaction	oxidation
reduction	battery	fuel cell

Objectives of chapter:

identify oxidation and reduction
understand how a battery works
understand how a fuel cell works and their significance for the future
explain what happens when iron rusts
compare and contrast combustion and respiration

Outline:

26.1 "LEO the lion goes GER"

the exchange of electrons in these types of reactions

Na and Cl as the example

reducing agent, Sodium, causes the reduction of Chlorine

oxidizing agent, Chlorine, causes the oxidation of Sodium

26.2 Energy of electrons flowing can be harnessed

"electrochemistry"

galvanic cells - Lemon Juice lab

demonstrations page 448 and 449

26.3 Batteries, how do they work?

26.4 Fuel cells - how do they work?

26.5 Electrical Energy can produce chemical change

electrolysis, the splitting of a compound with electricity

example: refining of aluminum from bauxite

26.6 Oxygen is responsible for corrosion and combustion

oxygen is a strong oxidizing agent

combustion is oxygen and a non-metallic compound

corrosion is oxygen and a metal - rust

can other metals rust?

Chapter links

the aluminum association - http://www.aluminum.org

the chemistry of the battery - http://www.duracell.com/Fun_Learning/index.htm

class text - conceptual physical science

PCDS useful links - sorted by topic

Related labs, activities and videos